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The effects of projectile size on crater formation and spallation in experimental impact cratering

: Poelchau, M.H.; Deutsch, A.; Thoma, K.; Kenkmann, T.

Meteoritics & planetary science 49 (2014), Supplement 1, Abstract A322
ISSN: 1086-9379
ISSN: 0026-1114
Meteoritical Society (Annual Meeting) <77, 2014, Casablanca>
Fraunhofer EMI ()

Impact cratering experiments were performed on quartzite, tuff, and dry and water-saturated sandstones in the framework of the MEMIN research unit [1,2]. 2.5 to 12 mm diameter steel and iron meteorite projectiles were accelerated to ~5 km/s at the two-stage light-gas gun facilities of the Fraunhofer EMI. Evaluation of the resulting craters shows that crater volumes and crater efficiencies of large-scale experiments are greater than predicted by strength scaling laws.